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Summary of Contents for Fisher & Paykel WA37T26EW
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Page 1: Service Manual
Service Manual ECOSMART Electronic Washer Model: WA37T26EW WA42T26GW Product codes: 96186 US 96193 US 96194 CA 479602... - Page 2 479602 April 2010 The specifications and servicing procedures outlined in this manual are subject to change without notice. The latest version is indicated by the reprint date and replaces any earlier editions. Fisher & Paykel Appliances Ltd Fisher & Paykel Appliances Inc 78 Springs Road, 5900 Skylab Road East Tamaki,...
- Page 3 479602 FISHER & PAYKEL ELECTRONIC WASHING MACHINES Covering the following model: WA37T26EW WA42T26GW Product codes: 96186 US, 96193 US & 96194 CA COPYRIGHT © FISHER & PAYKEL LTD 2010 - ALL RIGHTS RESERVED...
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Page 4: Table Of Contents
479602 CONTENTS HEALTH & SAFETY ........................6 SPECIFICATIONS ........................7 Dimensions ........................7 Maximum Capacity (Full Load) ..................7 Water Consumption .......................7 Water Fill Temperature (Approximate Factory Settings)..........7 Wash Motor........................7 Pump Motor ........................7 Water Valves........................8 Recirculating Valve ......................8 Thermistor........................8 2.10 Cabinet........................... 8 2.11 Lid .......................... - Page 5 479602 SERVICE PROCEDURES ..................... 42 Removal of Lid......................42 Components in Console Area..................42 Removal of Display Module ..................42 Removal of Water Valves .................... 43 Removal of Recirculating Valve................... 43 Removal of Thermistor ....................43 Removal of Motor Control Module ................44 Removal of Cord Set ....................
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Page 6: Health & Safety
479602 HEALTH & SAFETY When servicing the Designer series Range Hood, health & Safety issues must be considered at all times. Specific safety issues are listed below with the appropriate icon. Electrical Safety Ensure the mains power has been disconnected before servicing the washer. -
Page 7: Specifications
479602 SPECIFICATIONS Dimensions Height to lid Open 55.5in – 56.6in / 1410mm – 1440mm Closed 37.4in – 38.5 / 950mm – 980mm Height to console 39.7in – 41.3in / 1010mm – 1050mm Width 25.5in / 650mm Depth 25.5in / 650mm Inlet hose length 47.24in / 1200mm Packed weight... -
Page 8: Water Valves
479602 Water Valves Supply Mode of Operation Voltage Resistance Flow Rate Cold Digitally Operated 24V DC 64Ω @ 68 F / 20 4.2 Gallons per minute Digitally Operated 24VDC 64Ω @ 68 F / 20 3 Gallons per minute Note: Flow rate will vary slightly depending on pressure. Operating pressures: Maximum 150psi / 1034 kPa - Minimum 5psi / 34 kPa Note:... -
Page 9: Outer Tub
479602 Inner Basket Weight Large 23.10lb +/- 9.7oz / 10.480kg +/- 275g Inner Basket Speed Heavy Duty Regular Delicate Allergy Permanent Press Fast Spin 1,000 RPM 1,000 RPM 1,000 RPM 1,000 RPM Medium Spin 670 RPM 670 RPM 670 RPM 670 RPM Slow Spin 300 RPM... -
Page 10: Technical Overview
479602 TECHNICAL OVERVIEW This Service Manual contains information on the Product Specifications, Diagnostic Mode, Detailed Fault Codes and the complete disassembly and assembly instructions for the washing machine. Electronics 3.1.1 Motor Control Module The Motor Control microprocessor performs a wide variety of tasks. Primarily it controls the electronic switching hardware to control the three phase currents in the Smart Drive DC motor. -
Page 11: Stand By Mode
479602 Stand By Mode If the machine has not received any instructions for 10 minutes after being switched on at the power point, or after completing the cycle, it will automatically go into a low power “Stand By” mode. The control panel will be blank as if it was powered off at the wall. Before entering the Diagnostic or Option Adjustment modes, the machine must be taken out of the Stand By mode. -
Page 12: Water Valves
479602 To enter the option adjustment mode: 1. Plug the machine in but do not press POWER. 2. Press and hold the Start / Pause button, then press the Power button 3. Three quick beeps will be heard and the machine will show an unusual pattern of lights. 4. -
Page 13: Water Level Measurement
479602 Water Level Measurement The machine is fitted with a pressure sensor, which can control the fill to any water level. The pressure sensor is incorporated within the Motor Control Module and cannot be removed. The pressure tube connects from the Motor Control Module to the air bell at the bottom of the outer tub, and is part of the harness assembly. -
Page 14: Motor
479602 3.7.2 Auto Water Level The machine automatically selects the appropriate water level for the load when AUTO Water Level is selected, and will choose one of the pre-existing 5 water levels (low, medium low, medium, medium high and high). During fill the machine pauses occasionally to sense the water level. The machine checks if the water level is correct by using a series of 2 different agitate strokes. - Page 15 479602 To test all windings you will need to measure across: • Red & Blue • Red & Yellow • Blue & Yellow If the meter shows an incorrect reading we would then recommend testing the stator from underneath the machine as there could be a fault in the wiring harness. To test the stator, remove the rotor and stator.
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Page 16: Pump
479602 Pump The pump is coupled directly to the outer tub. This eliminates tub to pump hoses and the accompanying seals, clips etc. The pump housing is an integral part of the outer tub. When removing the pump up to a 1/3 of a Gallon of water may leak from the pump cavity. - Page 17 479602 The inner basket is free to move in a vertical direction. The position of the inner basket is determined by the water level. At the base of the inner basket is a flotation chamber consisting of a number of individual cells. When the machine is filling with water, the pressure on the air in these cells increases as the water level rises until eventually the inner basket floats upwards and disengages the driven spline from the drive spline.
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Page 18: Agitator
479602 3.11.3 Balance Rings The inner basket has 2 balance rings, one at the top, and one at the bottom. These are sealed compartments half full of water. This water allows the basket to balance. If one or both of these rings have lost water then the inner basket must be replaced. -
Page 19: Fabric Softener Dispensing
479602 3.14 Fabric Softener Dispensing TYPE: It is recommended that softener sheets should be used in the dryer rather than using liquid softener in the washing machine. Liquid softener has been known to produce a waxy build-up inside washing machines, called Scrud. We do however, provide a fabric softener dispenser for those who prefer liquids. -
Page 20: Size Setting Mode
479602 3.14.1 Scrud If fabric softener is used regularly it will eventually cause a build up within the outer tub. This can result in black flakes present in the wash load that can stain garments. To remove scrud follow the procedure below. -
Page 21: Drain Pump Test
479602 128 64 32 Drain Pump Test GW Washer When in diagnostic mode to activate the drain-pump press the REGULAR button. To deactivate the pump, press REGULAR button again. Water Valve Test The water valves can be activated in diagnostic mode by pushing WASH TEMPERATURE UP button to activate the Hot Valve and WASH TEMPERATURE DOWN button to activate the Cold valve. -
Page 22: Recycle Feature
479602 To turn the restart feature on, either repeat the steps above or switch off the power to the machine. The restart feature can be permanently programmed in to the machine’s memory. When in diagnostic mode press and hold ADVANCE down at the same time as pressing WATER LEVEL DOWN. -
Page 23: User Warnings
479602 User Warnings There are a number of warnings, which are generally caused by the user or poor installation. These warnings should be able to be corrected by the user. The machine signals user warnings by flashing LEDs and a rippling set of 5 beeps repeated every 6 seconds. This is the same tone that is heard when the machine is first plugged into the mains power. -
Page 24: Out Of Balance
479602 3. Check that the inner basket assembly is not jammed to the agitator with any foreign object that may be caught under the agitator skirt. 4. Check that the clutch teeth are not locked together with dirt, detergent or lint. Check that the teeth are not broken. -
Page 25: Diagnostic Table
479602 5.10 Diagnostic Table To use this table, firstly enter Diagnostic Mode (Refer to Section 5). The different levels of information can be extracted by using the Spin Speed up and down buttons. Diagnostic Spin Speed LEDs Diagnostic Info Displayed Level Fast Slow Hold... - Page 26 479602 Diagnostic Mode 5: Cycle Count at Last Fault (Low Byte). Diagnostic Mode 6: Cycle Count at Last Fault (High Byte). The number of Wash Cycles since the last fault is displayed on the Wash Progress LEDs. The low byte refers to binary* numbers from 1 through to 128. The high byte refers to numbers from 256 though to 32768.
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Page 27: Voltage Readings From The Controller
479602 5.11 Voltage Readings from the Controller 1. Water Valves 6. Lid lock Varies between 13 – 22V DC Pulses up to 30V when locking, when Note: Accurate voltages can only be locked, sits at approx 10V DC obtained by using a True RMS multimeter. 2. -
Page 28: Resistance Readings From The Controller
479602 5.12 Resistance Readings from the Controller 1. Water Valves 5. Lid Lock 64 Ω +/- 10% 63Ω +/- 10% @ 68 2. Pump Motor 7Ω 6. Thermistor 10KΩ @ 77 F / 25 3. Recirculating Valve 1.7KΩ @ 68 F / 20 4. -
Page 29: Binary Decoding Chart - 8 Bits (0-255)
479602 5.13 Binary Decoding Chart – 8 Bits (0-255) 8 WASH PROGRESS LEDs short rinse spin wash ΟΟΟ ΟΟΨ ΟΨΟ ΟΨΨ ΨΟΟ ΨΟΨ ΨΨΟ ΨΨΨ ΟΟΟΟΟ ΟΟΟΟΨ ΟΟΟΨΟ ΟΟΟΨΨ ΟΟΨΟΟ ΟΟΨΟΨ ΟΟΨΨΟ ΟΟΨΨΨ ΟΨΟΟΟ ΟΨΟΟΨ ΟΨΟΨΟ ΟΨΟΨΨ ΟΨΨΟΟ ΟΨΨΟΨ ΟΨΨΨΟ ΟΨΨΨΨ... -
Page 30: Wiring Diagram
479602 WIRING DIAGRAM Resistance Table Water Valve 64Ω @ 68 F / 20 Recirculating Valve Between 700Ω and 2.5KΩ Pump 7Ω Lid Lock 63Ω +/- 10% @ 68 F / 20 Thermistor 10KΩ @ 77 F / 25 Stator 39Ω +/- 10%... -
Page 31: Detailed Fault Codes
479602 DETAILED FAULT CODES DETAILED FAULT CODES INTRODUCTION The format for fault description in this booklet follows the Primary, Secondary, Tertiary and Quaternary fault source system. These sources have mostly been arranged in order of most likely source of fault, but in some cases the sequence has been modified to aid the servicing procedure. It should be noted that the fault source Pump System includes the pump and drain hose assembly. - Page 32 479602 (00001010) Temperature Sensor (Thermistor) Error The temperature sensor may be open circuit or the ambient temperature is below 14 F / - 10 o C. Primary Source: Thermistor Secondary Source: Motor Control Module Action: 1. Check the connection of the thermistor to the Motor Control Module.
- Page 33 479602 (00100101) No change in the water level (Pump Blocked Error) While draining, the water level reading from the pressure sensor has not changed for over 3 minutes. There are three likely reasons for this fault. One is that the drain hose or the pressure switch hose has been squashed or kinked and the pump out rate has been dramatically reduced.
- Page 34 479602 (00101000) Inner Basket Disengage Fault While carrying out a basket check, the Motor Control Module has found that the basket is not engaged even though the pressure sensor indicates that the tub is empty. The Motor Control Module continues to check for 2 minutes, after which time it displays this fault. The first two areas to check are the clutch and the pressure tube.
- Page 35 479602 (00110010) Hot Valve Coil Faulty The Motor Control Module has measured a voltage from the valve diagnostic circuit that indicates the hot valve is faulty. The most likely cause is that the valve harness has not been connected correctly or the valve is open circuit. See fault 48 for service procedure. (00110011) Recirculation Valve Fault The motor controller has registered a drop in water level in the recirculation phase of the wash cycle.
- Page 36 479602 3. Check that the pressure tube has not come off and that it is not kinked. Tertiary Source: Motor Control Module. Action: Replace the Motor Control Module. (00111001) Brown Out During Display EEPROM Write Fault The Display has requested the Motor Control Module to perform an EEPROM write. Prior to writing, the Motor Control Module has tested the 15 Volt supply and found that it is below the safety level for writing EEPROM and has reported this to the Display.
- Page 37 479602 (01001010) Pressure Transducer Error The pressure transducer frequency is out of range Primary Source: Motor Control Module. Action: Replace Motor Control Module. 104. (01101000) See Fault Code 106 105. (01101001) Comms Error Time Out These faults are reported when the Display Module detects an error in the communications between the Display Module and the Motor Control Module.
- Page 38 479602 112. (01110000) Motor Current Sense Too High This fault occurs if the Motor Control Module detects that the motor current has reached an unrealistically high level for greater than 2 seconds. This suggests that the motor current sense circuit is faulty. Primary source: Motor Control Module.
- Page 39 479602 Action: 1) Check that the rotating basket assembly is not jammed to the agitator with any foreign object that may be caught under the agitator skirt. 2) Check that the clutch teeth are not locked together with dirt, lint, etc.
- Page 40 479602 233. (11101001) EEPROM Read Error Problem in reading the EEPROM data, coming from the Motor Control Module Primary Fault: Motor Control Module fault. Action: Replace Motor Control Module. 234. (11101010) Lid Lock Open Circuit Check harness to Lid Lock, the connections at the Motor Control Module and lid lock ends. Primary Fault: Connectors on the harness at either end could be at fault.
- Page 41 479602 Action: Check resistance across the connections. If out of specification, replace the Lid Lock, (63Ω +/- 10% @ 20 C (68 240. (11110000) Hall Out of Order. Same as previous Hall Error faults, just an extra fault code for Phase 6. Or an incorrect rotor for the machine has been fitted 241.
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Page 42: Service Procedures
479602 SERVICE PROCEDURES In order to service and to gain access to components within the machine, certain procedures must be followed. These procedures are set out below. Servicing note (a) To avoid stripping screws, do not over tighten when re-assembling parts. If using a power screwdriver, have the torque setting on low. -
Page 43: Removal Of Water Valves
479602 Removal of Water Valves (a) Follow the procedure for removal of Display Module. (Refer to Section8.3). (b) Disconnect wiring harness to each coil by first pulling downwards on the retaining clip. (c) Disconnect Thermistor harness from the Motor Control module. (d) Remove screw securing the outlet nozzle to the top deck. -
Page 44: Removal Of Motor Control Module
479602 Removal of Motor Control Module (a) Follow the procedure for removal of Console. (Refer to Section8.2). (b) Disconnect the Display wiring harness from the Motor Control module & place console out of the way. (c) Disconnect all remaining wiring harnesses to the Motor Control Module. -
Page 45: Removal Of Lid Lock
479602 Removal of Lid Lock (a) Follow the procedure for removal of console. (Refer to Section 8.2). (b) Disconnect the Display wiring harness from the Motor Control module & place console out of the way. (c) Disconnect lid lock wiring harness at the Motor Control Module. -
Page 46: Removal Of Neck Ring
479602 8.11 Removal of Neck Ring (a) Follow the procedure for removal of lid. (Refer to Section 8.1). (b) Carefully remove the two lid buffers from the front left & right side of the top deck by levering upwards, taking care not to damage the top deck. -
Page 47: Removal Of Pump Hood
479602 8.15 Removal of Pump Hood (a) Follow the procedure for removal of Inner Basket. (Refer to Section 8.13). (b) Remove the bolt securing the pump hood to outer basket. Reassembly: Refit in the reverse manner. Ensure that the gasket is not pinched between the pump hood and outer tub. -
Page 48: Removal Of Rotor
479602 8.17 Removal of Rotor (a) Tilt the rear of the machine carefully against the wall ensuring that the machine is stable and locked in position, take necessary precautions not to damage the wall or the machine. (b) Using 16mm or 5/8” socket, loosen Rotor bolt. - Page 49 479602 Note: Approximately 1/3 gallon of water remains in the pump sump after pump out and will spill when the pump is removed. Take care not to spill this water over electrical connections by using a towel or small container to catch the water. Reassembly: (a) Lubricate the seal face with liquid soap or detergent (do not use grease).
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Page 50: Specialised Service Procedures
479602 SPECIALISED SERVICE PROCEDURES Blocked Pump Procedure It is possible to clear a blockage/obstruction from the pump without having to drain the water from the machine or disturbing the pump. If however there are concerns over the condition of the water and there may be a risk of infection, i.e. -
Page 51: Shaft & Bearing Replacement
479602 Shaft & Bearing Replacement Procedures described in this section as well as section 9.3 can only be carried out by using the Bearing Removal Tool Kit, part number 502009. The contents of the kit are as follows: Bearing Removal Tool Kit 502009 Note: The extractor mandrel was designed for the older shaft with the external thread, however will work with the shaft on this machine with the internal thread. - Page 52 479602 WARNING: Make sure the Stator clamp plate is flat before reusing. If in doubt, replace. (c) Remove the outer bearing using the bearing removal tool. WARNING: Do not remove the bearings with a hammer and drift as serious damage to the bearing housing or outer tub may result.
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Page 53: Shaft & Bearing Assembly
479602 .07 in / 3mm Note: The outer bearing will be proud of the housing by approximately .07in /3mm. Shaft & Bearing Assembly (a) The bearings must be inserted separately with the inner bearing fitted first and pulled down with the bearing tool onto the shoulder in the bearing housing. IMPORTANT: There must be no gap between the bearing outer race and the shoulder of the aluminum extrusion. - Page 54 479602 (c) Ease the shaft through the bearings from inside the outer tub. Take care the shaft is fitted with the threaded retaining nut section facing downwards in the direction of the base. (d) Fit the shaft retention nut. Use the spline tool and spanner to tighten the shaft retention nut. (e) Invert the outer tub.
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Page 55: Wash Performance Information
479602 WASH PERFORMANCE INFORMATION 10.1 Creasing Creasing can be caused by over loading the washer or the dryer. Permanent Press or Delicate cycles have been designed to minimise creasing as they use a lower spin speed. Do not leave wet clothes to sit in the washer or laundry basket. -
Page 56: Operating Problems
479602 OPERATING PROBLEMS 11.1 No Power If the machine appears dead, and there is no response from pressing the power button, then check the following. • Check the supply voltage and that the machine is plugged in and switched on. •... -
Page 57: Continuous Or Slow Spinning
479602 • Check the 2 balance rings in the inner basket contain water. Check the basket weight. • Check for noisy suspension rods. • If the inner basket or agitator is noisy, check for obstructions. Check the spline drive is clean. If there is a grating sound, check the single stainless steel washer beneath the spline drive. - Page 58 479602 NOTES...
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